RIO DE JANEIRO: A Brazilian man has been arrested on terrorism charges just over a week from the Olympics after he posted comments online about the Islamic State group, his lawyer said Thursday. Chaer Kaloun, 28, a Brazilian of Lebanese descent, was “taken overnight to Ary Franco prison in Rio and arrested for having posted comments on Islamic State,” lawyer Edson Ferreira told Agence France-Presse. Officials gave little detail about the arrest, which comes a week after 12 men were arrested on accusations of forming a cell to discuss potential attacks at the time of the Rio Olympics and swearing loyalty to Islamic State. The justice department would only say that the arrest was made under anti-terrorism laws and that the indictment remains sealed. Earlier, Ferreira said the allegations lacked substance. “There is no basic accusation,” he told Globo television.